Error when trying to complie .less file in VS 2019 Community

[dsaddan]

Installed product versions

Microsoft Visual Studio Community 2019 Version 16.3.10 VisualStudio.16.Release/16.3.10+29519.87 Microsoft .NET Framework Version 4.8.03752

Installed Version: Community

Application Insights Tools for Visual Studio Package 9.1.00913.1 Application Insights Tools for Visual Studio

ASP.NET and Web Tools 2019 16.3.286.43615 ASP.NET and Web Tools 2019

ASP.NET Web Frameworks and Tools 2019 16.3.286.43615 For additional information, visit https://www.asp.net/

Azure App Service Tools v3.0.0 16.3.286.43615 Azure App Service Tools v3.0.0

Azure Functions and Web Jobs Tools 16.3.286.43615 Azure Functions and Web Jobs Tools

C# Tools 3.3.1-beta3-19461-02+2fd12c210e22f7d6245805c60340f6a34af6875b C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools 1.10 Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Cookiecutter 16.3.19252.1 Provides tools for finding, instantiating and customizing templates in cookiecutter format.

Extensibility Message Bus 1.2.0 (d16-2@8b56e20) Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

IntelliCode Extension 1.0 IntelliCode Visual Studio Extension Detailed Info

LESS Compiler 0.9.44 An alternative LESS compiler with no setup. Uses the official node.js based LESS compiler under the hood with AutoPrefixer and CSSComb built in.

Microsoft Azure Tools 2.9 Microsoft Azure Tools for Microsoft Visual Studio 0x10 - v2.9.20816.1

Microsoft Continuous Delivery Tools for Visual Studio 0.4 Simplifying the configuration of Azure DevOps pipelines from within the Visual Studio IDE.

Microsoft JVM Debugger 1.0 Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Microsoft Library Manager 2.0.83+gbc8a4b23ec Install client-side libraries easily to any web project

Microsoft MI-Based Debugger 1.0 Provides support for connecting Visual Studio to MI compatible debuggers

Microsoft Visual Studio Tools for Containers 1.1 Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container.

Mono Debugging for Visual Studio 16.3.7 (9d260c5) Support for debugging Mono processes with Visual Studio.

NuGet Package Manager 5.3.1 NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

ProjectServicesPackage Extension 1.0 ProjectServicesPackage Visual Studio Extension Detailed Info

Python 16.3.19252.1 Provides IntelliSense, projects, templates, debugging, interactive windows, and other support for Python developers.

Python - Conda support 16.3.19252.1 Conda support for Python projects.

Python - Django support 16.3.19252.1 Provides templates and integration for the Django web framework.

Python - IronPython support 16.3.19252.1 Provides templates and integration for IronPython-based projects.

Python - Profiling support 16.3.19252.1 Profiling support for Python projects.

SQL Server Data Tools 16.0.61908.27190 Microsoft SQL Server Data Tools

TypeScript Tools 16.0.10821.2002 TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools 3.3.1-beta3-19461-02+2fd12c210e22f7d6245805c60340f6a34af6875b Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual F# Tools 10.4 for F# 4.6 16.3.0-beta.19455.1+0422ff293bb2cc722fe5021b85ef50378a9af823 Microsoft Visual F# Tools 10.4 for F# 4.6

Visual Studio Code Debug Adapter Host Package 1.0 Interop layer for hosting Visual Studio Code debug adapters in Visual Studio

Visual Studio Tools for Containers 1.0 Visual Studio Tools for Containers

VisualStudio.Mac 1.0 Mac Extension for Visual Studio

Xamarin 16.3.0.281 (d16-3@859f726) Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer 16.3.0.256 (remotes/origin/d16-3@8a223bfd7) Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin Templates 16.3.565 (27e9746) Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms.

Xamarin.Android SDK 10.0.6.2 (d16-3/c407838) Xamarin.Android Reference Assemblies and MSBuild support. Mono: mono/mono/2019-06@476d72b9e32 Java.Interop: xamarin/java.interop/d16-3@5836f58 LibZipSharp: grendello/LibZipSharp/d16-3@71f4a94 LibZip: nih-at/libzip/rel-1-5-1@b95cf3fd ProGuard: xamarin/proguard/master@905836d SQLite: xamarin/sqlite/3.27.1@8212a2d Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-3@cb41333

Xamarin.iOS and Xamarin.Mac SDK 13.6.0.12 (e3c2b40) Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support.

• This extension: 0.9.44

Description

Edit a .less file: C:\CaspitDev\Web\CaspitWeb\CaspitWebTiles.Web\Content\Styles\Caspit.less

Make a change. Save the file.

No CSS file is created

An error is displayed in Output window. .

24/11/2019 15:21:08: System.ArgumentException: Illegal characters in path. at System.Security.Permissions.FileIOPermission.EmulateFileIOPermissionChecks(String fullPath) at System.Security.Permissions.FileIOPermission.QuickDemand(FileIOPermissionAccess access, String fullPath, Boolean checkForDuplicates, Boolean needFullPath) at System.IO.FileInfo.Init(String fileName, Boolean checkHost) at System.IO.FileInfo..ctor(String fileName) at LessCompiler.ProjectMap.d11.MoveNext() in C:\projects\lesscompiler\src\Compiler\ProjectMap.cs:line 96 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at LessCompiler.ProjectMap.d10.MoveNext() in C:\projects\lesscompiler\src\Compiler\ProjectMap.cs:line 86 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at LessCompiler.ProjectMap.d7.MoveNext() in C:\projects\lesscompiler\src\Compiler\ProjectMap.cs:line 43 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at LessCompiler.LessCatalog.d6.MoveNext() in C:\projects\lesscompiler\src\Compiler\LessCatalog.cs:line 38

[dsaddan]

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I am the same error with Visual Studio 2019 Community - 16.9.4